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name of steel product
|
Standard of chemical composition |
Grades of steel product |
Qualitative carbon steel
|
GB/T 699 |
50 |
Structural carbon steel |
GB/T 700 |
Q235A、Q235B、Q235C、Q235D
|
Low alloy structural steel
|
GB/T 1591 |
Q345A、Q345B、Q345C、Q345D、Q345E |
| ship-building steel |
GB/T 722 |
A、B、D、E |
Normal structural steel
|
JIS G 3101 |
SS330、SS400、SS490、SS540 |
| structural welding steel |
JIS G 3106 |
SM400A、SM400B、SM400C、SM490A、SM490B、SM490C、SM490YA、SM490YB、SM520B、SM520C |
Hot-rolled low carbon steel
|
JIS G 3131 |
SPHC、SPHD、SPHE |
| Steel-tube steel |
JIS G 3444 |
STK490 |
Normal structural steel
|
DIN EN 10111 |
DD11、DD12、DD13 |
| Non-alloy hot-rolled structural steel |
DIN EN 10025 |
S235JR、S235JRG2、S275JR |
| Normal structural steel |
DIN 17100 |
St33、St37-2、St37-3、St44-2、St50-2、St52-3 |
High-strength low alloy structural steel including Nb/V
|
ASTM A572 |
Grade50、Grade55、Grade65、A572 |
| Normal steel plate |
ASTM A36 |
A36 |
| Qualitative carbon steel |
ASTM A568 |
SAE1006、SAE1008、SAE1010 |
Steel-tube steel
|
API 5L |
X42、X46、X52、X56、X60 |
| Hot-rolled carbon structural steel |
ASTM A570 |
Grade33、Grade36、Grade40、Grade45、Grade50、Grade55 |
| Note: deviation is allowed to dimension, shape (roughness,falcate,wedge, etc) and weight of casting steel slab. Requirements such as techniques, test approach, inspection principle,packaging, marks and certificate of quality must carry out YB/T 2012. |
| Normal standard scope |
category
|
thickness （mm） |
width （mm） |
length (m) |
Slab
|
220 |
850-1600
1800-2720 |
6-12.5 |
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